Car-roof.



H. J. SMALL 6: 0. B. SGHO ENKY.

CAR ROOF.

7 APPLICATION FILED SEPT. B 1910.

Patented Mar. 7, 1911.

3 SHEETS-BHHBT 1.

' HQI. SMALL 510.3. S'GHOENKY.

APPLIOATIQH 1ILED SEPT. a, 1910.

Patented Mar. 7, 1911.

I 3 SHEETS-SHEET 3.

UNITED STATES c'An-Roor.

- Application filed September To all whom it may concern:.

Be it known that we,-Hn1\ ar J. SMALL, of San Francisco, in the'county of San Francisco and StateiofCalitornia, and O'rro B. Scnonxnr, of Easton, in the county of San Mateo and State of California, have jointly invented a certain new-and'useful- Improvement in Car'ltoofs, of which improvement the following is a. specification.

'Our invention relatesto metallic roots, which, while more particularly designed for use in railroad cars, are equally adaptable for application in vessels and buildings, and its obj eet is to provide a roof which shall be of stronger and lighter constri'rction than those previously known or put in practice,

andiu which. the ordinary c-arlines or transverse framing niay lie-dispensed with,

thereby efi'ecting' a corresponding reduction of weight and cost.

The improvement claimed is hereinafter fully set forth. 1

In the accompanying drawings: Figure 1' is a. vertical transverse section through a car roof, illustrating an embodiment. of our invention; Fig. 9., a longitudinal central section through the same; Fig. 3, a similar section, illustrating a structural modification; Fig. 4, a partial longitudinal section, on an enlarged scale, through the car roof shown in Figs. 1 and 2; Fig. 5, a' similar section, on a similar scale, through thecar roof shown in Fig. 3; Fig. (5, a diagrammatic transverse section through a passenger carroof of the monitordeck type, in which the invention is applied; and, Figs. 7, 8, 9, 10 and 11, diagrammatic longitudinal sections through car roofs, showing, respectively, different forms of root plates.

In the practice of our invention, we provide a plurality of oultside sheets or plates of metal, 1, suiiici'ent in number for the length of. roof required, which sheets form the top of the roof, and arefshaped to any desired contour or curvature in the transverse .sec t-ion of the roof. \Vhen thesesheets are-used to form the roof withoutbeing combined with the inside sheets hereinafter described, they are also curved or arched in'the longitudinal section of the roof, as indicated in Fig. 7 so as to beself supporting, and to constitutea roof so stiffened as not to require framing.

I \Ve also, in the preferred form of our invenion, combine with the outside sheets, a plui'ality of inside sheets or'plates of metal, 2,

HENRY 'J'. SIiIALL, SAN FRANCISCO, AND OTTO B. SCHOENKY, 0F EASTON, CALIFORNIA.

.Specification of Letters Patent.

PATENT OFFICE s, 1910. Serial no. 580,958.

each of which is pressed or rolled into curved or arched form transversely, and may also be longitudinally channeled or, curved, thus making the inside sheets of what may be termed bowl form. side sheets are, in this form of roof, secured together, at thecrowns of the arches formed by the junction of the inside sheets, orin the planes of the versed sines of the arcs of outer longitudinal curvature of theinside' sheets, by rivets, 3, which pass through thimbias or distance pieces, 3, thereby providing a continuous air space. throughout the length of the roof. The sides of the outside sheets, },'are secured to the side plates or' upper members, 5, of the car frame, by bolts, 6, and the sideedges of the inside sheets, 2, are similarly secured to the side plates, erably, as shown, by being riveted to the upper flanges of metal angle plates, 7, of substantially Z section, interposed between 'them and the side plates, the lower Han -es of said an le plates being connected to t 0 side platcsliy the bolts, 6. 'lhe arches of the inside sheets may be of any desired length, and the depth'of their transverse concavity may also be varied as conditions may require or in accordance with any preferred design. The transverse curvature of the iu-' side sheets may either be continuous, as shown in Fig. 1, or they may be bent into a )lurality of transverse curves, as in Fig. 6, t erehy adapting our improvementto the usual type oi? passenger car root known as the monitor deck. The outside and inside sheets, when shaped and secured together as above described, form a hollow section of which they are the extreme. outer fibers and are at the greatest practical distance from the neutral axis, thereby taking advantage of increased inertia'due to their distance therefrom andenabling weight of metal within the outer shells of the roofs, and cal-lines or other transverse framing, to be wholly dispensed with. I

The modification shown in Fig. 3, while according in principle with the construction above described, difiers therefrom in structural detail, in the. particular that each of the inside sheets, 2, is bent in the longi tudinal direction of the roof into a single outward curve instead of into two outward curves, as in the former case, each sheet thus forming a full arch of outward curvature, instead of practically two half arches as in The inside and out- Iatented an. 7, 1'911.

pretsheets, 1 which are curved or arched in the longitudinal plane of the roof as well as in the transverse plane, as indicated in Fig. 7, may be combined with inside sheets, 2, which are channeled in the longitudinal plane, instead of being arched, as indicated in Fig. 11, or outside sheets which are curved or bent in the longitudinal plane of the roof, may be combined with inside sheets which are notarched or bent in the longitudinal plane, as indicated in Figs. 8 and 9. Again,

0th the outside and the inside sheets may a be channeled in the longitudinal plane of the roof, :instead of being arched, as indicated in Fig. 10. In any case, however,-'one set of sheets is provided which are bent'in both the longitudinal and the transverse plane of the roof.

We claim as our invention and desire to secure by Letters Patent:

1. A. self-Sn porting roof for cars or the like, composed de endent sheet-metal plates,-arche longitu inally of the roof and-secured together at their transverse meeting ed es, and also arched transversely of the moi 2. A self-supporting-roof for cars or the like, comprising a plurality of outside sheets,

arched transversely of the roof, and a plurality of inside sheets, connected to but spaced away from said outside sheets and bent or curved transversely of the r00 3. A self-supporting roof for cars or thelike, comprisin a plurality of outside sheets,-

transversely to the longibent or curvetudinal direction of the roof, and a pluralentirely of a pluralitv of in-.

ity of inside sheets arched longitudinally and transversely, and secured to said outside sheets in the planes of the versed sines of theinarcs of longitudinal curvature.

4. In a self-supportingmetal roof, the combination of a plurglj v of outsideshects,

bent or curved transversely to the longitudinal direction of the roof, a plurality of inside sheets, spaced away from said outside sh'eets andlarched both longitudinally and transversely, and means connecting said inside and outside sheets together, in the' planes of the versed sines of their arcs of.- longitudinal curvature, whereby a continuous air space is provided between ssid inside and outside sheets.

. In a metal roof, the combination of a plurality of outside sheets which are shaped transversely to any desired curvature, a

plurality-of connected inside shee s which outside and inside sheets to said frame memhers. v

6. In a metal roof the combination of a plurality of, putside sheets which are shaped transversely to any desired curvature, a plurality of connected inside sheets which are individually arched upwardly both longitudinally and'transversely of tie roof, connections securing said outside and insid sheets together in the planes of the verse sines of the arcs of longitudinal curvature of said inside sheets, upper frame members,

Tangle plates interposed between the ends of the inside sheets and the frame members,

and secured to the inside sheets, and bolts connecting said angle plates to the upper frame members. I

r HENRY J. SMALL.

OTTO B. SGHOENKY. Witnesses:

H. H. HUMMEL, BEN BARTON.

Copies of thls patent may be obtained for ive. cents each, by addressing'tho "Commissioner oi Patents, Washington, D. C. 

